force, military force might enghaj probgauge in probes of national security information, looking for national security information. this economic espionage by the chinese military is a stark revelation, and it demonstrates that it's the entire force of the chinese government that is involved in this process. >> barbara, is there a cyberwar between the u.s. and china? if so, what are the pentagon's rules of engagement in such a war? >> i think absolutely. the answer is yes, i think it goes far beyond espionage. and it is war. it is war in this century. the pentagon, the obama administration actually trying to cope with that very question, christine. if you call this a war, what are the battlefield rules? if they attack us, if they try and get into u.s. banking systems, what are the rules for the u.s. to retaliate? would the u.s.? a battlefield situation try and take down another country's economic infrastructure, possibly having the impact of denying water, power, electricity to a population and a country we're at war with?